#include <iostream>

inline double square(double x){ return x*x;}

using namespace std;
int main()
{
    double a,b;
    double c=13.0;
    a=square(5.0);
    b=square(4.5+7.5);
    cout<<"a = "<<a<<", b = "<<b<<endl;
    cout<<"c = "<<c;
    cout<<", c squared = "<<square(c++)<<endl;
    cout<<"Now c = "<<c<<endl;
    return 0;
}
